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<?php
/*
* This code is part of GOsa (http://www.gosa-project.org)
* Copyright (C) 2003-2008 GONICUS GmbH
*
* ID: $$Id: class_socketClient.inc 17830 2010-04-26 08:38:12Z cajus $$
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
class Socket_Client
{
private $host = "";
private $port = "";
private $timeout= "";
private $errno = "";
private $errstr = "";
private $b_data_send = FALSE;
private $handle = NULL;
private $bytes_read = 0;
private $error = "";
private $is_error = FALSE;
private $b_encrypt = FALSE;
/* Crypto information */
private $ckey= "";
private $iv;
private $openssl_cipher = "aes-256-cbc";
private $iv_len = -1;
public function __construct($host, $port, $connect = TRUE, $timeout = 3){
$this->host= $host;
$this->port= $port;
$this->timeout= $timeout;
$this->reset_error();
$this->iv_len = openssl_cipher_iv_length($openssl_cipher);
/* Connect if needed */
if($connect){
$this->open();
}
}
public function setEncryptionKey($key)
{
if ($this->connected()){
$this->ckey = md5($key);
$this->b_encrypt = TRUE;
}
return($this->b_encrypt);
}
private function encrypt($data)
{
if($this->b_encrypt){
$data = base64_encode(openssl_encrypt($data, $this->openssl_cipher, $this->ckey, OPENSSL_RAW_DATA, $this->iv));
}
return($data);
}
private function decrypt($data)
{
/* decrypt data */
if($this->b_encrypt && strlen($data)){
$data = openssl_decrypt(base64_decode($data), $this->openssl_cipher, $this->ckey, OPENSSL_RAW_DATA | OPENSSL_ZERO_PADDING, $this->iv);
}
return($data);
}
public function connected()
{
return ($this->handle == TRUE);
}
public function open()
{
$this->reset_error();
$this->handle = @fsockopen($this->host, $this->port, $this->errno, $this->errstr, $this->timeout);
if(!$this->handle){
$this->handle = NULL;
$this->set_error(sprintf(_("Socket connection to %s:%s failed: %s"), bold($this->host), bold($this->port), $this->errstr));
}else{
$this->b_data_send = TRUE;
/* Create the IV and determine the keysize length */
$this->iv = substr(md5('GONICUS GmbH'),0, $this->iv_len);
}
}
public function set_error($str)
{
$this->is_error =TRUE;
$this->error=$str;
}
public function reset_error()
{
$this->is_error =FALSE;
$this->error = "";
}
public function is_error()
{
return($this->is_error);
}
public function get_error()
{
return $this->error;
}
public function write($data){
if($this->handle){
$data = $this->encrypt($data);
fputs($this->handle, $data."\n");
$this->b_data_send = TRUE;
}else{
$this->b_data_send = FALSE;
}
return $this->b_data_send;
}
public function read()
{
// Output the request results
$this->reset_error();
$str = "";
$data = "test";
socket_set_timeout($this->handle,$this->timeout);
stream_set_blocking($this->handle,0);
$start = microtime(TRUE);
/* Read while
* nothing was read yet
* the timelimit reached
* there is not data left on the socket.
*/
while(TRUE){
usleep(10000);
$data = fread($this->handle, 1024000);
if($data && strlen($data)>0) {
$str .= $data;
} else {
if(strlen($str) != 0){
/* We got <xml> but </xml> is still missing, keep on reading */
if(preg_match("/<\/xml>/",$this->decrypt($str))){
break;
}
}
}
if((microtime(TRUE) - $start) > $this->timeout ){
$this->set_error(sprintf(_("Socket timeout of %s seconds reached!"), bold($this->timeout)));
break;
}
}
$this->bytes_read = strlen($str);
$this->b_data_send = FALSE;
$str = $this->decrypt($str);
return($str);
}
public function bytes_read()
{
return $this->bytes_read;
}
public function close()
{
if($this->handle){
fclose($this->handle);
}
}
}
// vim:tabstop=2:expandtab:shiftwidth=2:filetype=php:syntax:ruler:
?>
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